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Tag Archives: 8n-213

Some progress with the old calculator

There are a number of YouTube videos about the restoration of machines like this (a Monroe 8N-213) and comparable machines (such as the Friden STW10). The challenge to getting them fully operational is getting them to multiply and divide, operations that are much more mechanically complicated than addition and subtraction. So far, though, I have […]

Can this old machine be saved?

The eBay portrait of the machine I bought With apologies to non-nerds, this is a nerd post. I have written in the past about a quirk I have — empathy for mechanical things. Seeing a beautiful old machine (or any beautiful machine, for that matter) abused or falling into ruin is painful. Like abused or […]